WordPress YayMail plugin <= 4.4.6 - PHP Object Injection vulnerability

published 2026-10-29 10 d ago modified 2026-10-30 9 d ago also EUVD-2026-112947

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

Shop manager PHP Object Injection in YayMail <= 4.4.6 versions.

Patch / fix

fixed in 1

YayCommerce YayMail 4.4.7

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 9 d ago (2026-10-30)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

YayCommerce YayMail

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/yaymail/vulnerability/wordpress-yaymail-plugin-4-4-6-php-object-injection-vulnerabi
vdb-entry

Sources

CVE List CVE-2026-42701
NVD CVE-2026-42701

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary